Abstract
High wear resistance of cast iron parts is obtained with a structure in them with a high carbide content and after additional heat treatment (hardening and tempering). The most applicable method of obtaining such a structure is preliminary hardening by remelting of hypoeutectic cast irons and the simplest and most economical means for practical hardening is a dc electric arc in an atmosphere of inert gas. It is desirable to conduct further investigations of the original structure, the kinetics of solution of carbon, the final structure, etc. This will promote further use of this method of treatment. It is not impossible that in introduction of this method other sources of concentrated energy than an electric arc in an atmosphere of inert gas may be used if together with economy they provide the necessary rate of solution of the components and accuracy in treatment.
Published Version
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